Penta­aqua­(oxydiacetato-κ³O,O′,O′′)strontium(II) monohydrate

In the title compound, [Sr(C₄H₄O₅)(H₂O)₅]·H₂O, the Sr^II atom is coordinated by a tridentate oxydiacetate dianion (ODA) and five water mol­ecules, with a distorted square antiprism coordination geometry. The ODA chelates meridionally to the Sr^II atom with a planar structure. The Sr—O bond distances range from 2.505 (2) to 2.688 (2) Å.

Benzimidazolium bis­(1H-benzimidazole-κN³)chloro­(oxydiacetato-κ³O,O′,O′′)cadmium(II)

The title compound, (C₇H₇N₂)[Cd(C₄H₄O₅)Cl(C₇H₆N₂)₂], is composed of Cd^II-containing complex anions and benzimidazolium (HBZIM) cations. The Cd^II atom is coordinated by a tridentate oxydiacetate (ODA) dianion, a chloride anion and two benzimidazole (BZIM) mol­ecules, forming a distorted octa­hedral CdN₂O₃Cl coordination geometry. The ODA dianion chelates facially to the Cd^II atom. The face-to-face distances of 3.444 (12) and 3.386 (5) Å between partially overlapped BZIM rings and between HBZIM rings, respectively, indicate the existence of π–π stacking in the crystal structure.